I need to bump this post because things are getting worse! Steering assist from power steering system is coming and going. Most noticeable at low speeds, like turning out of a driveway. I bought power steering fluid from Phil at Fastlane and changed the power steering fluid about 2 months ago. I can't see any leaks at the pump or the steering rack. There are no unusual noises and the fluid level is good. I think I have a problem with the pump or the rack but I don't know how to tell which one is the culprit (or something else?). Please, any advice on how to troubleshoot this so I can determine what is causing this. It would be very annoying to replace the pump only to discover the rack was the problem (&vice-versa!). Thanks for any help. This forum is great!

Dan